86668144 has 20 divisors (see below), whose sum is σ = 171089496. Its totient is φ = 42516032.

The previous prime is 86668123. The next prime is 86668147. The reversal of 86668144 is 44186668.

It is a super-2 number, since 2×86668144² = 15022734368809472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 86668144.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86668147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50254 + ... + 51949.

Almost surely, 2^86668144 is an apocalyptic number.

It is an amenable number.

86668144 is a deficient number, since it is larger than the sum of its proper divisors (84421352).

86668144 is a wasteful number, since it uses less digits than its factorization.

86668144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102264 (or 102258 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The square root of 86668144 is about 9309.5727077025. The cubic root of 86668144 is about 442.5406459307.

The spelling of 86668144 in words is "eighty-six million, six hundred sixty-eight thousand, one hundred forty-four".